One vertex per element, one color per generator, with an edge from x to x·s.
(11,15)(13,16)(17,18)(19,29)(20,26)(21,23)(22,27)(24,28)(25,31)(30,32) involution — undirected(1,2)(3,8)(4,6)(5,7)(9,10,12,14)(11,13,15,16)(17,19)(18,25)(20,22)(21,30)(23,27)(24,31)(26,32)(28,29)(1,3,5,6)(2,4,7,8)(9,11)(10,13)(12,15)(14,16)(17,20,24,21)(18,26,28,23)(19,22,31,30)(25,32,29,27)(1,2)(3,4)(5,7)(6,8)(9,10)(11,13)(12,14)(15,16)(17,21,24,20)(18,26,28,23)(19,30,31,22)(25,32,29,27)(1,2)(3,4)(5,7)(6,8)(9,11)(10,13)(12,15)(14,16)(17,22,24,30)(18,27,28,32)(19,20,31,21)(23,29,26,25)(1,4)(2,6)(3,7)(5,8)(17,23,24,26)(18,21,28,20)(19,27,31,32)(22,25,30,29)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.